The background for the compilation series is provided in the first post along with my starting point analyzing temperature records. See Climate Compilation Part I Temperatures
Compilation II Arctic Sea Ice (link to category)
Another preoccupation has been the fluctuating Arctic Sea Ice extents. I noticed that warmists were quite focused on this issue, especially the annual minimums in September. And despite the long record of ice charts prepared by naval authorities, all the ice watchers referred almost exclusively to the satellite estimates, especially the NASA team results published as the Sea Ice Index (SII) on NSIDC.
In the past some researchers had preferred the ice charts from the NIC (US Naval Ice Center, now National Ice Center) and noted differences between operational observations from NIC and the satellite estimates that rely on passive microwave sensors. The NIC index is called MASIE (Multisensor Analyzed Sea Ice Extent), has a higher…
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